Base member for air diffuser



FIG. 1 is a front perspective view of a base member for air diffuser, showing our new design;

FIG. 2 is a rear perspective view of thereof;

FIG. 3 is a front elevation view of thereof;

FIG. 4 is a rear elevation view of thereof;

FIG. 5 is a left elevation view of thereof;

FIG. 6 is a right elevation view of thereof;

FIG. 7 is a top plan view of thereof; and,

FIG. 8 is a bottom plan view of thereof.

The base member for air diffuser is shown with a symbolic break in its length. The appearance of any portion of the base member for air diffuser between the break lines forms no part of the claimed design. 

CLAIM The ornamental design for a base member for air diffuser, as shown and described. 